IntelBX80677I77700K
IntelBX80648I75820K

4 Cores, 8 Threads @4.2GHz, Kaby Lake.
Release date: Q1 2017.

6 Cores, 12 Threads @3.3GHz, Haswell-E.
Release date: Q3 2014.

Real World Speed
Performance profile from 713,554 user samples
608,625 User Benchmarks
Best Bench: 94% Base clock 4.2 GHz, turbo 5 GHz (avg)
Worst Bench: 69% Base clock 4.2 GHz, turbo 0.8 GHz (avg)
Poor: 69% Great: 94%
SPEED RANK: 130th / 1363
Gaming
Gaming 85%
Aircraft carrier
Desktop
Desktop 89%
Aircraft carrier
Workstation
Workstation 71%
Battleship
104,929 User Benchmarks
Best Bench: 89% Base clock 3.3 GHz, turbo 4.5 GHz (avg)
Worst Bench: 68% Base clock 3.3 GHz, turbo 1.55 GHz (avg)
Poor: 68% Great: 89%
SPEED RANK: 201st / 1363
Gaming
Gaming 78%
Battleship
Desktop
Desktop 79%
Battleship
Workstation
Workstation 69%
Battle cruiser
Effective Speed
Effective CPU Speed
85 % Slightly faster effective speed.
+9%
77.9 %
Memory
Avg. Memory Latency
89.9 Pts +5% 85.9 Pts
1-Core
Avg. Single Core Speed
129 Pts Much faster single-core speed.
+31%
98.5 Pts
2-Core
Avg. Dual Core Speed
243 Pts Faster dual-core speed.
+25%
195 Pts
4-Core
Avg. Quad Core Speed
432 Pts Faster quad-core speed.
+15%
377 Pts
8-Core
Avg. Octa Core Speed
661 Pts Slightly faster octa-core speed.
+5%
628 Pts
Memory
OC Memory Latency
96.9 Pts +3% 94.2 Pts
1-Core
OC Single Core Speed
145 Pts Faster OC single-core speed.
+18%
123 Pts
2-Core
OC Dual Core Speed
277 Pts Faster OC dual-core speed.
+14%
244 Pts
4-Core
OC Quad Core Speed
500 Pts Slightly faster OC quad-core speed.
+8%
462 Pts
8-Core
OC Octa Core Speed
766 Pts 775 Pts +1%
Market Share
Based on 55,525,980 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.14 % Hugely higher market share.
+396%
0.23 %
Value
Value For Money
78.8 % +3% 76.3 %
User Rating
UBM User Rating
83 % More popular.
+28%
65 %
Price
Price (score)
$365 $300 Cheaper.
+18%
Age
Newest
68 Months More recent.
+30%
97 Months
TDP
Thermal Design Power (TDP)
91 Watts Much more energy efficient.
+35%
140 Watts
Cores
CPU Processing Cores
4 cores 6 cores Much higher core count.
+50%
Threads
CPU Processing Threads
8 threads 12 threads Much higher thread count.
+50%
Lithography
Manufacturing process
14 nm Much newer manufacturing.
+36%
22 nm
Base Clock
Base Clock Speed
4.2 GHz Faster base frequency.
+27%
3.3 GHz
Turbo Clock
Turbo Clock Speed
4.5 GHz Faster turbo frequency.
+25%
3.6 GHz
64-Core
OC Multi Core Speed
779 Pts 977 Pts Faster OC 64-core speed.
+25%
64-Core
Avg. Multi Core Speed
676 Pts 797 Pts Faster 64-core speed.
+18%
Series
CPU Architecture
Kaby Lake Haswell-E
Socket
Motherboard Socket
FCLGA1151 LGA2011-V3
Graphics
Integrated Graphics
HD 630 None
Launch Date
Launch Date
Q1'17 Q3'14
Cache
Cache
8 MB 15 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX 2.0 SSE4.2, AVX 2.0, AES
Lithography
Lithography
14 nm 22 nm
Recommended Price
Recommended Customer Price
$339.00 - $350.00 $389.00 - $396.00
Max Turbo Frequency
Max Turbo Frequency
4.50 GHz 3.6 GHz
Bus Speed
Bus Speed
8 GT/s DMI3 0 GT/s
Memory Types
Memory Types
DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V DDR4 1333/1600/2133
Memory Channels
Max # of Memory Channels
2 4
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 630 None
Package Size
Package Size
37.5mm x 37.5mm 52.5mm x 45.0mm
Max # of PCI Express Lanes
Max # of PCI Express Lanes
16 28

More specs » More specs »
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The Core i7-7700K is Intel’s flagship Kaby Lake based CPU which is reported to have the same IPC as its predecessor, Skylake. Comparing the 7700K and 6700K shows that both average effective speed and peak overclocked speed are up by 7%. Most of the increase in average effective speed is explained by the 5% boost in base clocks from 4.0 to 4.2 GHz. The improved peak lab speed is attributable to a combination of better overclocking capacity and improvements in Intel’s speedshift technology which make the 7700K slightly more responsive. Kaby Lake also has marginally better HD 630 integrated graphics. The i7-7700K is priced similarly to the i7-6700K so for top end gaming and workstation builds, the 7700K is the clear choice for 2017. AMD’s Ryzen will release later this year so things could change at that time. [Jan '17 CPUPro]

MORE DETAILS

The Intel Core i7-5820K is the cheapest of three (5820K,5930K,5960X) new Haswell-E prosumer/enthusiast processors. The 5820K sports six physical cores and twelve threads which allow for enormous processing throughput. Unfortunately Intel have somewhat handicapped the 5820K by setting its base clock at just 3.3 GHz, 0.7GHz lower than the class leading 4790K. Comparing the 4790K and 5820K shows that the cheaper i7-4790K is significantly faster at both single and dual threaded workloads. The additional two cores found in the 5820K are not relevant to general computing and as such the 5820K probably makes a better server rather than consumer proposition. The Haswell-E X99 architecture also requires DDR4 RAM which is currently far more expensive than DDR3. Overall the 5820K is a very expensive option and probably best avoided by the vast majority of consumers.  [Sep '14 CPUPro]

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Processor Rankings (Price vs Performance) September 2022 CPU Rankings.

We calculate effective speed which measures real world performance for typical users. Effective speed is adjusted by current prices to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top CPUs. [CPUPro]

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Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
How Fast Is Your CPU? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

UserBenchmark of the month

How it works

  • - Download and run UserBenchmark.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - SkillBench (space shooter) tests user input accuracy.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.

 Frequently Asked Questions

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The Best.
CPUGPUSSD
Intel Core i5-12600K $278Nvidia RTX 3060-Ti $450Crucial MX500 250GB $38
Intel Core i5-12400F $170Nvidia RTX 3070 $500Samsung 850 Evo 120GB $106
Intel Core i7-12700K $394Nvidia RTX 3050 $300Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $35Corsair Vengeance LPX DDR4 3200 C16 2x8GB $60SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $30Corsair Vengeance LPX DDR4 3000 C15 2x8GB $60SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $453SanDisk Extreme 16GB $17
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